I heart my Contacts. Ok, yes, I love the people I contact, but here I mean that I love having lists of people to whom I can quickly send a message, share a document, or invite to a Calendar event. This tool is also AWESOME when working with students. You can set up Contact Groups for your classes, for your parents, for differentiated groups, and even for groups of your colleagues. When I have several groups of people I frequently contact (as groups), I set up Contact Groups and save myself a bunch of time, not to mention memory power and visualization in trying to remember who might have been sitting in which seat around a table in a meeting or gathered around in a group at a training.
How to make it happen: